Direct-draft regulator for warm-air furnaces



R. M. JUDD ET AL DIRECT DRAFT REGULATOR FOR WARM AIR FURNACES Original Filed Jan. 24, 1927 C. 7's: k iaip/l 5. McA/smey mmmm Patented Aug. 28, 1928.

UNITED STATES 1,682,527 PATENT OFFICE.

RICHARD M. JUDD, ERNEST C. TAYLOR,

AND RALPH S. MCNANEY, 0F DO'WAGIAC.

MICHIGAN, ASSIGNORS T0 PREMIER WARM AIR HEATER COMPANY, OF DOWAGIAC, MICHIGAN, A CORPORATION OF MICHIGAN. 1

DIRECT-DRAFT REGULATOR FOR WARM-AIR FURNACES.

Original application filed January 24, 1927, Serial NO. 163219. Divided and this application filed March 12, 1928.

This invention relates generally to warm air furnaces and refers particularly to direct draft regulators for such furnaces and the means for mounting such regulators in said furnaces.

The primary object of the present invention is to so mount a direct draft regulator in the radiator of a warm air furnace that there will be no possibility of the products of combustion escaping from the radiator and mixing with the warm air.

lVith these and other objects in view the invention resides in certain novel features of construction, combinations and arrangements of parts as will be more fully described and particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a perspective view of the radiator with a portion thereof broken away to show the draft regulator in its closed position;

Figure 2 is a detail view of the draft regulator and the removable pivot pin;

Figure 3 is a modified form of the invention shown in Figures 1 and 2;

Figure 4 is a detail view of the removable pin shown in Figure 3.

This invention is a division of applicants copending application for direct draft regulator for warm air furnaces, Serial No. 163,219, filed Jan. 24, 1927, which has matured into Patent No. 1,670,508, May 28, 1928.

In the accompanying drawings wherein like characters of reference indicate like parts, the numeral 1 designates a radiator consisting of an annular passage 2 and a cross passage 3 communicating therewith at opposite sides thereof. This cross passage is adapted to communicate by means of an opening 4 in its bottom walls with the combustion chamber of a warm air furnace (not shown) and is directly in line with an outlet passage 5 through which the products of combustion escape.

Suitably mounted within the cross passage 3 between the opening 4 and the annulazpassage 2 is a direct draft regulator 6 for allowing the products of combustion to pass directly from the radiator through the cross passage 3 and the outlet passage when in its open position, or for compelllng the same to take a circuitous path through the SerialNa 261,168.

annular passage when the regulator is in ts closed position. As shown this. regulator is pivoted below its horizontal center-line so as to form upper and lower surfaces of different areas, thereby providing an unbalanced construction. However to insure the retention of the regulator in its vertical closed position under normal conditions, the lower portion thereof is weighted as at 7.

In order that there will beno possibility of the products of combustion mixing with the warm air, we provide the regulator 6 with pivot pins 8 which are journalled in recessed bosses 9 formed as an integral part of the walls of the cross passage 3. As shown, the recesses extend inwardly from the base portions communicating passage whatsoever is provided for the escape of the products of combustion through the walls of the cross passage.

It will be apparent that one of the pivot pins 8 must be detachably connected to the regulator to allow for insertion and removal thereof. WVe, therefore, provide the rogulator at one side thereof with a recessed portion 10 and an integral strap 11 bridging the extreme end portion of said recess. In mounting the regulator the integral pin 8 is first slipped into place and the recessed portion 10 is positioned so as to register with the recess of the other boss 9, whereupon a removable pin 12 is inserted in. the recess 10 and then into engagement with the boss 9, being held therein by means'of frictional engagement with the strap 11.

It is apparent however, that other means may be employed for retaining the remoi able pin in operative position and we have shown in Figure 3 a modified construction for positively retaining the pin in place. In this arrangement the strap 11 is notched as at 15 and the pin 12 is provided with a lug 16 adapted to engage the notch when the pin is moved to operative position. The inner end of the pin is preferably provided with a groove 17 for facilitating the insertion and removal of a cotter pin 18 through an opening 19 in the regulator, this cotter pin preventing longitudinal movement of the pivot pin in the recess 10.

As the means for operating the regulator forms no part of the present invention this 7 of the bosses so that no feature will be described very briefly as constituting a pusher bar 13 having an enlarged free inner end 14 slidably mounted in the whereby a mixing of the products of combustion with the warm air is entirely prevented, thus eliminating an objectionable feature from furnace constructions.

What we claim as our inventionis:

1. Ina warm air furnace,the combination with a radiator, of :a draft regulator therefor, and means for pivotally mounting said regulator within said radiator including recesscd bosses forming integral portions of the walls of said radiator, the recessed, portions thereof communicating with the interior of said radiator only, and pivot pins carried by said regulator and adapted for engagement in said bosses.

2. In a warm air furnace,the combination with a radiator, ofa draft regulator there for, and means for pivotally mounting said regulator within said radiator including recessed bosses formingintegral portions of the walls of said radiator, the recessed por tions thereof communicating with the interior of said radiator only. and terminating flush with the inner faces of the walls of said radiator, and pivot pins carried by said regulator and adapted for engagement 'in said bosses. j

In a warm airfurnace, the combination with a radiator, of a draft regulator therefor, and me'ansfor pivotally mounting said regulator within said radiator including recessed bosses forming integral portions of the walls of said radiator, the recessed, portions thereof communicating with the interior of said radiator only, and pivot pins carried by said regulator and :ulaptedffor engagement in said bosses, one of said pins being detachably carried by said regulator for facilitating the mounting of said regulator in said radiator.

4. In a warm air furnace, the combination with a radiator, of a draft regulator therefor, and means fOFPIVOtEIllyIHOIIDtHIg said with a radiator, of a draft-regulator therefor, and means for iivotally mounting said regulator within saitl radiator including recessed bosses forming integral portions of the side walls of said radiator the recessed portions thereof communicating with the interior of said radiator only, a pivot pin integrally mounted on one side of said-regulator for engaging one of said bosses, a second pivot pin adapted for engagement with the other boss. and meanson said regulator for detachably securing said last mentioned pin in operativeposition, including a recess extending inwardly from one side of said regulator and adapted-to register with the-recess of the last mentioned boss, anda strap formed integral with said regulator and cooperating with the-recess aforesaid to form a retainer for said pin.

f 6. In awarm air furnace, the combination with a. radiator, of'a draft regulator there for, and means for pivotally mounting said regulator within said radiator including pivot pins carried by said regulator and mounted in the walls ofsaidradiatonone of said pivot pins being detachably carried by said regulatorfor facilitating the mounting of said regulator in said radiator.

7 In awarm air furnace, the combination with a radiator, of a draft regulator therefor, and means for pivotally mounting said regulator within said radiator including pins carried by said regulator and engageable in recesses in walls of said radiator, one of said pivot pins being detachably mounted in arecess in said regulator registering with one ofthe recesses in the Wall of the radiator and a strap formed integral with said regulator adjacent said recess for retaining said pivot pin therein, said strap being provided with a notch andsaid pin having a lug engageablewith said notch for preventing turningiof said pin in the recess.

In testimony whereof we afiix our signatures.

RICHARD M. JUDD. ERNEST C. TAYLOR. RALPH S. MGNANEY.

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